Let’s start with clearing all the confusion. The Toyota Yaris Ativ and the Toyota Vios are two different cars based on the same platform, called the Toyota B. In Thailand, Toyota sells both the Vios and the Yaris Ativ. But the Vios, powered by a 1.5-litre petrol engine, is priced at a premium over the Yaris Ativ that gets a 1.2-litre petrol engine and qualifies as an Eco car according to the Thai market’s classification.